During Aerosol Drug Delivery Using a Small-Volume Jet Nebulizer (SVN)

During aerosol drug delivery using a small-volume jet nebulizer (SVN) set at 8 L/min input flow, a patient asks that the head of the bed be lowered to a semi-Fowler's position. Immediately after doing so, you observe a significant drop in SVN aerosol output, despite there being at least 3 ml of solution left in the reservoir. What would you do to correct this problem?

A) Add 1 to 2 ml more diluent to the nebulizer reservoir.
B) Increase the nebulizer input flow to 10 to 12 L/min.
C) Reposition the patient so that the SVN is more upright.
D) Decrease the nebulizer input flow to 3 to 4 L/min.